mastered

It's not difficult to understand this world when you mastered the internal relations of things.

掌握了事内部联系你就不难理解这世界。

He has mastered every detail of the business.

他已精通生意每节。

He has mastered the ship's crew.

他已能管住全体船员。

I never mastered Latin.

我从未能掌握拉丁文。

This fact indicates that China has already mastered, and has been continuously improving, its dispenser design technique.

这些事实表明中国早已掌握并不断发展分配器设计技术。

The energy released by the watch engine, the barrel, must be mastered, controlled and distributed parsimoniously at a rate corresponding to the real flow of time, to its exact measure.

机械表发条盒能量释放，应该是可以控制地、均匀地、稳定地、可测量地在释放过程中。